In 2025, stocks involved in nuclear energy have been some of the best performers in the market. Established leader Constellation Energy (NASDAQ: CEG) is up 44%, and small modular reactor developer NuScale Power (NYSE: SMR) is up 95% as of the Aug. 18 close. The favorable stance on nuclear energy from artificial intelligence (AI) hyperscalers and the Trump administration has been a big component of these rallies.
However, when it came to Q2 earnings, the market reaction for nuclear stocks wasn’t always a positive one. Below, we'll look at some of the most talked-about names in this space and detail who won and who lost on Q2 earnings. All data is as of the Aug. 18 close unless otherwise indicated.
